Baha'ullah's polygamy and the Qur'an!

"Concerning the question of plurality of wives among the Muslims: This practice current in all Islamic countries does not conform with the explicit teachings of the Prophet Muhammad. For the Qur'an, while permitting the marriage of more than one wife, positively states that this is conditioned upon absolute justice. And since absolute justice is impossible to enforce, it follows, therefore, that polygamy cannot and should not be practised. The Qur'an, therefore, enjoins monogamy and not polygamy as has hitherto been understood."

(From a letter written on behalf of the Guardian to an individual believer, January 29, 1939)